Internal-combustion engine.



rib. 682,567. Patented sept. mnsol.

F. REICHENBACH.

INTERNAL COMBUSTIKN ENGINE.

(Application Bled July 5, 1901.) (No Model.)

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lpN'Ti-:aNAL-oowi Bestnote: sucia Epi, .A j

To aLZZ whont: vivi/ay concern# l 1 Beit known that I, FRITZ REICHENBACH,

civil engineer, a subject of the King of Prius- Y sia, German Emperor, residin-rat No. 5 Teltower street, inthe city of Berlin, in the Kingdom of Prussia, German Em pire, have invented certain new and useful Improvements f in Internal-Combustion Engines, of Whichii'ie following is a specification.

In order to obtain an'automatic ignition oi' v 'the explosive mixture, internal-combustion engines have been constructed in which. a

- part of the'residues may remain in the cylinder and can be compressed inthe same, so as to get ahigher temperature, by meansot which the Aexplosive mixture may be ignited as soon as itcomes in contact and gets mixed with the hot residues. There exist internal-combustion engines of this kind in which eitherthe already-finished mixture 6r the mixture proper of the fuel and the air is'led into lthe hot residues or in which first the air. only is mixed with said residues, whereafter the fuel is introduced intothi's mixture of residues and air. Internal-combustion engines of the `atorementioned kind or kinds have not met with success, because in the casein which the tinished mixture was introduced into the hot residues the arising ame struck back into the supply channel or pipe conducting' the explosive mixture into the cylinder and because in the other case, in which first only the air is led into the compressed hot residues, the temperature of these latter was so ln'uch reduced that an automatic explosion yture in contact with the compressed hot residues cannot strike back either into one or into the other supply-pipe, becauseneither the fuel nor the air is capable of conducting the flame. 1

One form of apparatus embodying my invention is illustrated `inthe drawings, in-

Figure 1 is a longitudinal vertical section,

ted lines. Fig. '2 is a plan view of somufch of the apparatus asis necessary to illustrate the invention.

l lpartly-'fin elevation,'the gear-wheelsior driving the cam-shaft being indicated by thedot-f A "The piston a,.wl iich reciprocates in the cyl'- f indere, is shown in that position ,in-which a part of :the residues iscomp'ressed jin therear part of the cylinder e, as welLas in the ranged to be actuated in any suitable'Way-4I as, for example, `by a Valvee-lever G, pivoted at g' and having' its forward end provided witha roller g2, arrangedto bel operated in the usual way by a cam G"o 'n'1the cam-shaft G2, which. cam is so adj ustedand constructed that the exhaust-valve will-beheld open dur-A ing the first part ot the backward stroke ot A the piston and will'be closedsufti'cientlybe# fore the completion' o'f said backward `stroke to 4enable the piston to compress the residues,

and thereby develop enough heat t'o cause the ignition of the fuel andair when afterward admitted to the` compression-chamber f. The. pipe b, supplying the fuel, and the pipe cl, supplying the air, also terminate at the compression-chamber j", the communication between each pipe b and dand the com,- pression -chambe'r f being controlled by a suitable valve, these valves being indicated at Zi and il, respectively, Fig. 1. These valves h and e' are arranged to be simultaneously `operated by means of acam G3, fixed on the cani-shaft G2 and arranged to act ou a roller gif, carried by a lever G4, fulcrumed at g', said lever having one end in engagement with the valve-stem of the valve t. 'llo this lever is connected a rod H, which is pivoted to the arm kof a rock-shaft H', journaled in a bracket H2, mounted ou the engine-cylinder, the rock-shaft having a second arm h2, which bears against the valvestem ot'l the valveh. v By this arrangement the valves h and t'. will be opened simultaneously b`y'--the contact of -the cam G3 with the roller g3, this cam G3 being so adjusted and constructed that it will not open the l -tion of the gases, if this be desired.

ready to com n'enceits forward stroke. Moreover, the'valves h andl z will be closed at a suitable-point ofthe forward stroke of the piston in order to allow for an expansive ac- When the residues have been compressed by the piston a, the valves h and lL' are opened either exactly at the same time, or nearly so, so that -rthe fuel and the air fiow into the'compression-chamber, forming with each other yt-he explosive mixture which then is ignited by the h'eatof the compressedresidues. The

piston a is thus caused to :nove forward, and' on moving backward vit expels the combustion-gases through the exhaust-pipe c, the Valve g of which is opened for a certain time. At the proper moment. the valve g is closed and the remain-ing combustiongases are compressed in consequence vof' thefurther motion of the'piston, when the valves h and are opened again, so that afresh part of the fuel and the air may again pass into the compression-chamber and into the 4compressetfehot .residues therein contained. The air and the compression period, and they ma-y be after' fuel maybe cooled, if desired, during the pression-chamber and an exhaust-outlet, of

a. piston movable in the cylinder, means for` closing the exhaust-outlet before the piston completes its backward stroke, whereby a` part of the residues of combustion are comesaeev Y pressed and means for supplyingr air and fuel separately and si m ultaneously to the v`compression-chamber upon the completion of the compression of the residues of explosion.

2. In an internal-combustion engine, the combination, with a cylinder having a coinpression-chamber, an exhaust-outlet, an air.

inlet, and a fuel-inlet separate from the airinlet, eta-piston movable lin the cylinder, valves in the exhaust-outlet,the air-inletand the fuel-inlet, means fory closing the exhaustvalve before the piston has completed its backward'l stroke, 'wher'eby the residues of combustion are compressed, mechanism for forcing'a'ir ythrough the air-inlet valve upon the completion of the backward stroke of the piston, and separate means for simultaneously forcing fuel through the fuel-inlet valve.

3.- In aninternal-comhustion engine, the

combination, with a cylinder having a cornpression-chamber, an exhaust-outlet, an air inlet and a fuel-inlet ,separate from theairinlet, of a piston movable in' said cylinder, an exhaust-valve in the exhaust-outlet', an air-inlet valve in the air-inlet, afuel-inlet valve in the fuel-inlet, means for'closing the exhaust Valve Vbefore the pistonhas com pleted its backward stroke,-whereby the residues of combustion are compressed, means for simultaneously opening thev air and fuel inlet valve uponlhe completion of the backward stroke` ofthe piston, and independent devices for separately 'y upplying airand fuel to the'a'ir and fuel inlet.

In Witness whereofl have hereunto set my lia-nd in presence of two witnesses.

j FRITZREICHENBACII. Vitnesses: Y

HENRYv HAsnER, WOLDEMA HAUPT.

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